It is running too lean, it may just need carb adjustments, this should be carried out by somebody with an engine taco to check max revs after adjusting, you can adjust the L screw without doing too much damage, turn the screw out 1/4 turn to richen the mixture, if the carb has an anti tamper screw you will need a speciel tool to adjust. If carb adjustments do not cure it then it is a fuel blockage, either the fuel filter in the tamk or in the carb itself.
Husqvarna man
March 2010
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